Method and apparatus for operating variable optical...

Details Method and apparatus for operating variable optical... Method and apparatus for operating variable optical...

G - Physics

02

F

G02F 1/01 (2006.01) H04B 10/08 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2435259

A method and apparatus are disclosed for operating an eVOA by modulating its attenuation. If an optical signal power is below a loss of signal (LOS) power threshold the eVOA attenuation is set to a maximum attenuation and then, periodically and quickly decreased and increased in steps while checking for the presence of optical signals above the LOS power threshold. The method is also used for operating a multiplicity of eVOAs while minimizing the risk of damage to optical network equipment.

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